LT in Cookbiz

1. JUnit for Android
@nory_kaname

2. ● MUST do TDD
● Android has Test Framework
● We'll use "Android Testing Support Library"
○ test helper libary
まとめ
Note : "MUST": RFC2119

3. Android Test Policy
Debugging and testing in Android Studio (Ep 4, Android Studio)
https://youtu.be/2I6fuD20qlY

4. Test driven development
Test First
Test MUST run on Master branch!!

5. Test fundamental in Android
Android
Test frameworks

6. 2 type of JUnit
● Normal JUnit (3.0 , 4.0)
○ running on JVM
○ Java class , module test
● Android JUnit (3.0 , 4.0)
○ running on Adroid Device(Emulator)
○ UI Testing

7. Learn JUnit
● Recommend Books

8. UI Testing
Tools
● Android Studio
● Espresso(android-test-kit, for Google)

9. Layout file
Layout file to configure the screen.
<RelativeLayout xmlns:android="http://schemas.android.
com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="@+id/text_view"
android:text="@string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</RelativeLayout>
Widget ID

10. Old UI Testing
@MediumTest
public void testClickMeButton_clickButtonAndExpectInfoText() {
// get Object
Button mClickMeButton= (Button)mClickFunActivity.findViewById(R.id.button);
TextView mInfoTextView= (Button)mClickFunActivity.findViewById(R.id.text);
// expected text
String expectedInfoText = mClickFunActivity.getString(R.string.info_text);
// click button
TouchUtils.clickView(this, mClickMeButton);
// check
assertTrue(View.VISIBLE == mInfoTextView.getVisibility());
assertEquals(expectedInfoText, mInfoTextView.getText());
}
Test code w/o Espresso
● test for text object ,if click button

11. UI Testing w/ Espresso
@MediumTest
public void testClickMeButton_clickButtonAndExpectInfoText() {
// click button
onView(withId(R.id.button)).perform(click());
// check
onView(withId(R.id.text)).check(matches(isDisplayed(),
withText(R.string.info_text)));
}
Test code w/ Espresso
● test for text object ,if click button
Only 2 Lines !! OMG!!

12. Assertion
onView(withId(R.id.button)).
perform(click())
check(matches(isDisplayed()));
Select view -> perform -> check
ViewAction
ViewMatcher
ViewAssertion

13. Esprsso CheatSheet
● onView()
○ pick up view object
● onData()
○ pick up data(for List)
● intended,intending
○ check Intent Data
We can use many
Matcher methods.

14. not enough method...
We want to check ...
● inRoot
○ pick up view on the other Window
● Check
○ text color
○ hint text
● Other
○ wait for display

15. Original Matcher method
public static Matcher<View> withTextHintColor(final int resourceId) {
return new BoundedMatcher<View, TextView>(TextView.class) {
:
:
:
};
}
We can make matcher method which check
test.

16. ex) Toast Window
public static Matcher<Root> isToast() {
return new TypeSafeMatcher<Root>() {
@Override
public boolean matchesSafely(Root root) {
int type = root.getWindowLayoutParams().get().type;
if ((type == WindowManager.LayoutParams.TYPE_TOAST)) {
IBinder windowToken = root.getDecorView().getWindowToken();
IBinder appToken = root.getDecorView().getApplicationWindowToken();
if (windowToken == appToken) {
// windowToken == appToken means this window isn't contained by any other windows.
// if it was a window for an activity, it would have TYPE_BASE_APPLICATION.
return true;
}
}
return false;
}
};
}
Toast window Matcher.
(We have to know the Android Frameworks)

17. ● MUST do TDD
● Android has Test Framework
● We use "Android Testing Support Library"
○ test helper libary
● Make Matchers.
Note : "MUST": RFC2119

18. Thank you !!